return n.RType
	}
	return sliceElemRType(pos, n.Type())
}

// CompareRType asserts that n is a comparison (== or !=) operation
// between expressions of interface and non-interface type, and
// returns an expression that yields the *runtime._type value
// representing the non-interface type.
func CompareRType(pos src.XPos, n *ir.BinaryExpr) ir.Node {
	assertOp2(n, ir.OEQ, ir.ONE)